S
M
T
W
T
F
S
30
89°
64°
31
87°
68°
1
88°
68°
2
89°
64°
3
85°
63°
4
84°
64°
5
84°
64°
6
88°
67°
7
88°
67°
8
87°
66°
9
87°
67°
10
88°
66°
11
87°
66°
12
87°
65°
13
86°
66°
14
87°
65°
15
82°
64°
16
82°
64°
17
85°
59°
18
81°
59°
19
83°
60°
20
84°
62°
21
85°
63°
22
80°
62°
23
84°
61°
24
82°
62°
25
82°
59°
26
83°
57°
27
Hist. Avg.
80°
58°
28
Hist. Avg.
80°
57°
29
Hist. Avg.
79°
57°
30
Hist. Avg.
79°
57°
1
Hist. Avg.
79°
56°
2
Hist. Avg.
78°
56°
3
Hist. Avg.
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marlboro
Marlboro's September 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 57° and 68°. The average high for September is 85° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Marlboro. See also: October | November | December.
